> On Sep 26, 2024, at 14:46, Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx> wrote: > > In collapse_pte_mapped_thp(), we may modify the pte and pmd entry after > acquring the ptl, so convert it to using pte_offset_map_rw_nolock(). At > this time, the pte_same() check is not performed after the PTL held. So we > should get pgt_pmd and do pmd_same() check after the ptl held. > > Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx> Reviewed-by: Muchun Song <muchun.song@xxxxxxxxx> Thanks.
